DS Daily: What franchise needs to be on the DS?

With yesterday's DS Daily, we thought about all of the franchises that generally aren't represented or have recently made their way onto the DS. We thought about how a game (take Blue Dragon, for example) could make its way onto the DS, totally disregarding its initial genre, utilizing the unique functions of the handheld.

So, if you could take a franchise and adapt it for play on the DS, what franchise would it be and how would you augment its initial genre and style for the handheld? Would you take a game in the FPS genre and turn it into a side-scroller on the platform? Would you adapt a card game into a shoot-em-up?